One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,4)(3,7,9,11)(5,8,14,12)(10,15,13,16)(17,18,24,27)(19,22,26,32)(20,29,31,25)(21,23,30,28)(33,34,39,38)(35,42,37,40)(36,44,46,41)(43,47,45,48)(1,3)(2,7)(4,11)(5,13)(6,9)(8,16)(10,14)(12,15)(17,19,24,26)(18,22,27,32)(20,28,31,23)(21,25,30,29)(33,35,39,37)(34,40,38,42)(36,45,46,43)(41,48,44,47)(3,9)(7,11)(10,13)(15,16)(17,20,24,31)(18,25,27,29)(19,28,26,23)(21,22,30,32)(33,34,39,38)(35,40,37,42)(36,41,46,44)(43,47,45,48)(1,4,6,2)(3,7,9,11)(5,12,14,8)(10,15,13,16)(17,21)(18,23)(19,25)(20,22)(24,30)(26,29)(27,28)(31,32)(33,36,39,46)(34,41,38,44)(35,43,37,45)(40,47,42,48)(1,3)(2,7)(4,11)(5,10)(6,9)(8,15)(12,16)(13,14)(17,22)(18,26)(19,27)(20,30)(21,31)(23,25)(24,32)(28,29)(33,37,39,35)(34,40,38,42)(36,43,46,45)(41,48,44,47)(1,5)(2,8)(3,10)(4,12)(6,14)(7,15)(9,13)(11,16)(17,23)(18,21)(19,20)(22,25)(24,28)(26,31)(27,30)(29,32)(33,38,39,34)(35,40,37,42)(36,44,46,41)(43,47,45,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.